EP1057276B1 - Internal circuit for adaptive modeselection of multi-mode rf integrated circuit - Google Patents

Internal circuit for adaptive modeselection of multi-mode rf integrated circuit Download PDF

Info

Publication number
EP1057276B1
EP1057276B1 EP99965510A EP99965510A EP1057276B1 EP 1057276 B1 EP1057276 B1 EP 1057276B1 EP 99965510 A EP99965510 A EP 99965510A EP 99965510 A EP99965510 A EP 99965510A EP 1057276 B1 EP1057276 B1 EP 1057276B1
Authority
EP
European Patent Office
Prior art keywords
integrated circuit
mode
amplifier
signal
mixer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99965510A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1057276A1 (en
Inventor
Vladimir Dvorkin
Michael G. Wong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of EP1057276A1 publication Critical patent/EP1057276A1/en
Application granted granted Critical
Publication of EP1057276B1 publication Critical patent/EP1057276B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/406—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with more than one transmission mode, e.g. analog and digital modes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H04B1/28—Circuits for superheterodyne receivers the receiver comprising at least one semiconductor device having three or more electrodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • This invention relates generally to radio frequency integrated circuits, and more particularly to a multi-mode RF integrated for use in a mobile radio or similar application.
  • Dual mode operation also permits the radio frequency integrated circuits (RFICs) to be reconfigured, such as by inserting or removing amplifiers from the received signal path, so that weak signals can be amplified sufficiently by inserting the low noise amplifier in the path, or strong signals can be received without distortion by removing the low noise amplifier from the single path when the received signal strength is adequate for processing without it.
  • RFICs radio frequency integrated circuits
  • WO 98 17012 discloses a prior art radio frequency integrated circuit in a dual-mode radiotelephone capable of operation in analog or digital modes.
  • an RF integrated circuit for a cellular telephone set includes an improved control circuit for switching between at least two modes of operation, depending upon a characteristic of a signal received by the integrated circuit, the RF integrated circuit including a first input for receiving a first RF signal, when the integrated circuit is in a first mode; a second input for receiving a second input signal when the integrated circuit is in a second mode; and a detector on the integrated circuit couples to the first and second inputs for detecting the presence of the first and second RF signals, and producing an output signal at a logic port of the detector, depending on the state of the first and second RF signals; and a controller on the integrated circuit connected to the detector for switching the integrated circuit between the first mode and the second mode in response to the output signal without the need for the application of an cxternal control signal to the integrated circuit.
  • the integrated circuit includes a first RF amplifier on the integrated circuit and operative in a first mode, the RF amplifier having a first control input for activating the amplifier, the integrated circuit also including a second RF amplifier on the integrated circuit operative in the second mode, and having a second control input for activating the second RF amplifier, the first and second control inputs connected to the controller, so that the first RF amplifier is activated in the first mode, and the second RF amplifier is activated in the second mode.
  • an RF processor integrated circuit for a cellular telephone that can operate in a PCS mode and a cellular mode, and a controller for switching between modes without the application of an external control signal from a source off the chip.
  • an autonomous RF integrated circuit includes a controllable attenuator in a signal path of the integrated circuit, and a detector responsive to the received signal level for generating the signal output related to the received signal level, the attenuator having a control input connected to the detector for changing the attenuation of the attenuator in response to the strength of the received signal.
  • an autonomous RF processor integrated circuit includes a low noise amplifier and a detector responsive to the received signal level for selectively inserting the low noise amplifier in the signal path, or of removing it where the received signal strength is adequate for processing without the amplifier.
  • a portion of a radio frequency integrated circuit is enclosed within outline 10. This may be an entire RFIC, but more likely only a portion of an RFIC that includes additional circuitry.
  • the RFIC is forrned on a semi-conductor chip using available appropriate fabrication methods. The invention is not limited to any particular semi-conductor technology.
  • the chip includes a number of input and output connections shown in Figure 1 as dots on the block diagram schematic. Physically, these connections are pads on the integrated circuit chip that are connected to pins or the equivalent structure on the integrated circuit package. Adding pins to an integrated circuit chip increases the chip size, because additional, physically large pads must be added, and increases the size of the package because additional pins must be added. Increasing the size of an integrated circuit chip increases its cost, and usually reduces the yield. Increasing the size of the package in which the integrated circuit is mounted may make the package large for a particular application.
  • the present invention eliminates the need for adding pins to the RF integrated circuit for controlling operation modes. Further, the present invention reduces or eliminates the need for external control circuits, especially external circuits used for mode detection and generation of mode control signals provided to the dedicated RF integrated circuit.
  • the RF integrated circuit includes RF amplifier 12 adapted to amplify received cellular telephone signals, and including an input 14 for receiving the signals from the antenna, a duplexer, filters external to the chip; or the like.
  • Amplifier 12 has an output 16 connected to a filter 18, which in turn has an output 20 connected to a mixer 22. All of this is conventional circuitry in cellular telephone receivers.
  • the RF amplifier 12 has a power input 24 for activating or deactivating the amplifier.
  • Mixer 22 has a power input 26 for activating and deactivating the mixer.
  • the power inputs 24 and 26 are connected to one terminal of a controllable switch 30, which has another terminal 34 connected to an off chip supply of corrective voltage of V cc which is preferably connected to the chip at terminal 38.
  • Switch 30 is controlled by control input 40, which is adapted to receive a logic level signal for selectively opening and closing the switch.
  • the switch 30 may be a transistor formed on the integrated circuit.
  • the RF integrated circuit includes a second RF amplifier 42 adapted to amplify received PCS telephone signals, and including an input 44 for receiving the signals from the antenna, a duplexer, filters external to the chip, or the like.
  • Amplifier 42 has an output 46 connected to a filter 48, which in turn has an output 50 connected to a mixer 52.
  • Amplifier 42 and mixer 52 have power inputs 54 and 56 respectively. These are connected to one terminal of a controllable switch 70, a second terminal of which is connected to power source V cc . Switch 70 is controlled by a logic level signal applied to control input 72. Switches 30 and 70 are configured, so that when switch 30 is on, switch 70 is off, and vice versa .
  • Control inputs 40 and 72 of switches 30 and 70 respectively are connected to first and second outputs 74 and 76 of RF sensing and mode control circuit 78.
  • the RF sensing and mode control circuit 78 has first and second inputs 80 and 82 that are coupled to local oscillator inputs 84 and 86 of mixers 22 and 52 respectively.
  • the inputs to the RF sensing and mode control circuit are capacitively coupled to the inputs of mixers to couple a small amount of the signal applied to the mixers, just adequate to trigger detectors in the sensing and mode control circuit for producing logic level signals at outputs 74 and 76 for operating switches 30 and 70.
  • the local oscillator signals are applied through pins 90 and 92 of the RF integrated circuit, and out IF outputs of the mixers 22 and 52 are provided at pins 94 and 96 of the RF integrated circuit respectively.
  • This arrangement permits the RF integrated circuit to autonomously switch between a cellular mode of operation, and a PCS mode of operation, based solely on sensing the local oscillator inputs to the mixers for the cellular and PCS signal chains respectively, without the need for a separate control input for switching modes.
  • an autonomous RF processor integrated circuit includes an amplifier 100 having an input 102 connected to an off chip source, and an output 104 connected to a filter 106 whose output is connected to a first input of a mixer 108.
  • the mixer has a second input 110 and an output 112, both of which may be connected to input/output pins of the RF integrated circuit.
  • Capacitive tap 114 is connected to the output of amplifier 100 and to an input of a threshold detecting mode controller 115 which produces a control signal at an output 116 thereof, which controls a switch 120 connected across amplifier 100 for selectively bypassing the amplifier if a strong enough signal is produced, so as to improve linearity and prevent overloading the amplifier.
  • the mode controller 115 is responsive to a received signal level, and while a switch is shown for bypassing the amplifier entirely, the signal produced at output 116 could be used to proportionally control the gain of the amplifier in response to this signal output.
  • the amplifier 100 can be replaced with a controllable attenuator, the attenuation of which can be controlled by the output of controller 115.
EP99965510A 1998-12-22 1999-12-16 Internal circuit for adaptive modeselection of multi-mode rf integrated circuit Expired - Lifetime EP1057276B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US218547 1998-12-22
US09/218,547 US6249686B1 (en) 1998-12-22 1998-12-22 Internal circuit for adaptive mode selection of multi-mode RF integrated circuit
PCT/EP1999/010175 WO2000038339A1 (en) 1998-12-22 1999-12-16 Internal circuit for adaptive modeselection of multi-mode rf integrated circuit

Publications (2)

Publication Number Publication Date
EP1057276A1 EP1057276A1 (en) 2000-12-06
EP1057276B1 true EP1057276B1 (en) 2002-08-28

Family

ID=22815539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99965510A Expired - Lifetime EP1057276B1 (en) 1998-12-22 1999-12-16 Internal circuit for adaptive modeselection of multi-mode rf integrated circuit

Country Status (9)

Country Link
US (1) US6249686B1 (ko)
EP (1) EP1057276B1 (ko)
JP (1) JP4582742B2 (ko)
KR (1) KR100661537B1 (ko)
CN (1) CN1127811C (ko)
DE (1) DE69902635T2 (ko)
ES (1) ES2183642T3 (ko)
TW (1) TW462148B (ko)
WO (1) WO2000038339A1 (ko)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6934558B1 (en) * 1993-12-15 2005-08-23 Mlr, Llc Adaptive omni-modal radio apparatus and methods
US5761621A (en) 1993-12-15 1998-06-02 Spectrum Information Technologies, Inc. Apparatus and methods for networking omni-modal radio devices
US6496708B1 (en) * 1999-09-15 2002-12-17 Motorola, Inc. Radio frequency coupler apparatus suitable for use in a multi-band wireless communication device
US6961584B2 (en) 2000-03-22 2005-11-01 Mlr, Llc Tiered wireless, multi-modal access system and method
US20020137472A1 (en) * 2001-01-23 2002-09-26 Quinn Liam B. Wireless antenna switching system
WO2002089327A1 (en) * 2001-04-27 2002-11-07 Koninklijke Philips Electronics N.V. Switch in uhf bandpass
US6954446B2 (en) * 2002-06-25 2005-10-11 Motorola, Inc. Multiple mode RF communication device
US7657282B2 (en) * 2002-10-23 2010-02-02 Hitachi, Ltd. Multimode wireless communication apparatus and high frequency integrated circuit therefor
EP1614233A4 (en) * 2003-04-15 2007-06-27 Rf Monolithics SYSTEM, METHOD, AND CIRCUIT FOR DYNAMIC RANGE ENHANCEMENT IN A COMMUNICATION SYSTEM
TWI253832B (en) * 2004-05-18 2006-04-21 Benq Corp A wireless video signal detectable mobile phone
US7605723B2 (en) * 2004-12-14 2009-10-20 Cirrus Logic, Inc. Circuits and methods for implementing mode selection in multiple-mode integrated circuits
KR100689482B1 (ko) 2005-02-28 2007-03-02 삼성전자주식회사 무선 통신 시스템에서 다중 무선 회로 적용 장치 및 방법
JP4493540B2 (ja) * 2005-04-01 2010-06-30 シャープ株式会社 チューナ
EP1965504B1 (en) * 2007-02-27 2015-08-19 Alcatel Lucent Integrated circuit and method for reception of radio frequency signals
US7920026B2 (en) * 2008-04-07 2011-04-05 National Semiconductor Corporation Amplifier output stage with extended operating range and reduced quiescent current
DE102015114489A1 (de) * 2015-08-31 2017-03-02 Intel IP Corporation Ein Verfahren und ein System zum Steuern einer Mehrzahl von elektronischen Komponenten, die einer Mehrzahl von integrierten Schaltungen eines mobilen Kommunikationsgeräts arbiträr zuweisbar sind
US11012106B2 (en) 2016-09-23 2021-05-18 Qualcomm Incorporated Implementation of improved omni mode signal reception
WO2018123204A1 (ja) * 2016-12-27 2018-07-05 株式会社ソシオネクスト レーダー装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0438604Y2 (ko) * 1987-04-03 1992-09-09
JPH079921B2 (ja) 1988-01-27 1995-02-01 シャープ株式会社 半導体集積回路およびその特性検査方法
US5694414A (en) 1991-05-13 1997-12-02 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
SE519357C2 (sv) 1991-08-29 2003-02-18 Ericsson Telefon Ab L M Cellindelat radiotelefonkommunikationssystem för mobilradiotelefonstationer av multimodtyp
US5745523A (en) 1992-10-27 1998-04-28 Ericsson Inc. Multi-mode signal processing
JP2908683B2 (ja) * 1993-11-30 1999-06-21 デイエツクスアンテナ株式会社 テレビジョン放送信号受信用ブースタ
US5854985A (en) * 1993-12-15 1998-12-29 Spectrum Information Technologies, Inc. Adaptive omni-modal radio apparatus and methods
GB2288101B (en) 1994-03-22 1998-04-29 Nokia Mobile Phones Ltd Multi-mode radio telephone
US5519887A (en) 1994-08-09 1996-05-21 At&T Corp. Switchable filter phase-locked loop frequency synthesizer device and method for achieving dual-mode cellular communications
US5722063A (en) * 1994-12-16 1998-02-24 Qualcomm Incorporated Method and apparatus for increasing receiver immunity to interference
US5694614A (en) 1995-02-15 1997-12-02 Ast Research, Inc. Minimum latency bus interface circuit with reduced I/O pin count through multi-mode operation
US6546044B1 (en) * 1996-10-11 2003-04-08 Ericsson Inc. Dual-mode radiotelephone apparatus for digital or analog modulation

Also Published As

Publication number Publication date
TW462148B (en) 2001-11-01
DE69902635D1 (de) 2002-10-02
KR20010041143A (ko) 2001-05-15
EP1057276A1 (en) 2000-12-06
CN1291382A (zh) 2001-04-11
WO2000038339A1 (en) 2000-06-29
JP4582742B2 (ja) 2010-11-17
KR100661537B1 (ko) 2006-12-27
DE69902635T2 (de) 2003-02-20
US6249686B1 (en) 2001-06-19
CN1127811C (zh) 2003-11-12
ES2183642T3 (es) 2003-03-16
JP2002533979A (ja) 2002-10-08

Similar Documents

Publication Publication Date Title
EP1057276B1 (en) Internal circuit for adaptive modeselection of multi-mode rf integrated circuit
US7512388B2 (en) Multiband or multimode front end antenna switch
KR100752280B1 (ko) 휴대단말기의 안테나주파수 자동매칭 장치
KR100592767B1 (ko) 개선된 전력증폭기 효율을 가진 듀얼 안테나 다이버시티송신기 및 시스템
KR101793732B1 (ko) 조절 가능한 다중 대역 전력 증폭기 모듈을 위한 장치 및 방법
JPH11317690A (ja) ラジオトランシ―バ用受信機直線性の適応制御技術
US6510310B1 (en) Dual mode phone architecture utilizing a single transmit-receive switch
US5584056A (en) Dual-bandwidth cellular telephone switching apparatus
AU753043B2 (en) Systems and methods for management of current consumption and performance in a receiver down converter of a wireless device
MXPA05002234A (es) Puenteo para amplificador de potencia en un semi-duplex ic.
EP1012993B1 (en) A radio front-end circuit
US7505743B2 (en) Dual band transmitter having filtering coupler
US6055421A (en) Carrier squelch method and apparatus
JP2006190021A (ja) 半導体集積回路装置および無線通信システム
KR100277128B1 (ko) 듀얼밴드 무선통신 시스템에서 방해주파수 수신신호 감쇄장치
JP2003017957A (ja) 高周波増幅装置及びそれを用いた受信機
US20010046881A1 (en) Radio frequency receiver in a mobile telephone
JPH06284036A (ja) 無線通信装置のアンテナ回路
JPH09130292A (ja) 移動体無線機
KR20020078393A (ko) 이동통신단말기의 드라이브 앰프 제어 장치 및 그 방법
KR100378121B1 (ko) 이동 통신시스템의 상호변조 제어 장치 및 방법
KR20000067527A (ko) 휴대용 단말기의 파우어 부스터 회로
KR20000041315A (ko) 무선통신장치에서 소모전류를 줄이기 위한 장치 및 방법
KR20020076057A (ko) 이동통신 단말기 수신회로 장치
KR20030028060A (ko) 이동통신 시스템의 수신감도 개선 장치 및 방법

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 20001229

17Q First examination report despatched

Effective date: 20010508

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69902635

Country of ref document: DE

Date of ref document: 20021002

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: GB

Ref legal event code: 746

Effective date: 20020918

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20021212

Year of fee payment: 4

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2183642

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: FR

Ref legal event code: D6

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030530

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031217

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20031217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051216

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

REG Reference to a national code

Ref country code: FR

Ref legal event code: GC

REG Reference to a national code

Ref country code: FR

Ref legal event code: RG

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20181126

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20181127

Year of fee payment: 20

Ref country code: FR

Payment date: 20181127

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69902635

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20191215

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20191215